feat: Testground tooling (#2456) #2750

Job	Run time
branch_name	1s
goreleaser-check	7s
lint / golangci-lint	2m 10s
lint / yamllint	5s
markdown-linter / markdown-lint	6s
markdown-linter / markdown-link-check	1m 42s
test / test	9m 46s
test / test-short	2m 59s
test / test-coverage	4m 12s
test / test-race	6m 59s
test / test-fuzz	12m 39s
lint / hadolint / hadolint	7s
version_bump	5s
goreleaser	0s
	40m 58s

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